Something found out later in life

Many years ago i had nice home 4 bedrooms had old friend and 2 18 year old girls well all lived happy sat around evening chatting drinking smoking weed etc but was not till many years later found why 1 the girls all ways smiling she told how use sit on one the big bean bags with mini Vibrator in side no knickers being naughty and no one ever noticed and all ways wonder how many other girls doing same if you 1 drop me a smile